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Reflectance response of tapered optical fiber coated with graphene oxide nanostructured thin film for aqueous ethanol sensing


Citation

Shabaneh, Arafat Abdallah Abdelwadod and Girei, Saad Hayatu and M. Thirunavakkarasu, Punithavathi and Wan Ab Rahman, Wan Baihaqi and A. Bakar, Ahmad Ashrif and Sadek, Abu Zafar and Lim, Hong Ngee and Huang, Nay Ming and Yaacob, Mohd Hanif (2014) Reflectance response of tapered optical fiber coated with graphene oxide nanostructured thin film for aqueous ethanol sensing. Optics Communications, 331. pp. 320-324. ISSN 0030-4018; ESSN: 1873-0310

Abstract

In this work, optical sensing performance of tapered multimode fiber tip coated with graphene oxide (GO) nanostructured thin film towards aqueous ethanol with different concentrations is investigated. The tapering process of the optical fiber is done by a glass processing machine. The multimode optical fiber tip is dip-coated with GO and annealed at 70 °C to enhance the binding of the nanomaterials to the silica fiber. FESEM, Raman microscopy and XRD analyses are performed to micro-characterize the GO thin films. The morphology of the GO is observed to be in sheets forms. The reflectance response of the GO coated fiber tip is compared with the uncoated tip. The measurements are taken using a spectrophotometer in the optical wavelength range of 550–720 nm. The reflectance response of the GO coated fiber tip reduced proportionally, upon exposure to ethanol with concentration range of 5–80%. The dynamic response of the developed sensor showed strong reversibility and repeatability when it is exposed to ethanol with concentrations of 5%, 20% and 40% in distilled water. At room temperature, the sensor shows fast response and recovery as low as 19 and 25 s, respectively.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Science
DOI Number: https://doi.org/10.1016/j.optcom.2014.06.035
Publisher: Elsevier
Keywords: Graphene oxide; Ethanol; Optical sensing; Reflectance; Optical fiber sensor; Dip-coating
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 11 Oct 2016 02:47
Last Modified: 23 Oct 2019 07:58
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.optcom.2014.06.035
URI: http://psasir.upm.edu.my/id/eprint/35189
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